[Nets-seminars] Talk today in UCL Electronic Engineering

Richard G. Clegg richard at richardclegg.org
Fri Nov 9 11:48:50 GMT 2012


Don't forget today's talk -- it is in the Barlow Room (807) not the 
usual room. The speaker is Maria Martini from Kingston University:

Quality-driven wireless multimedia

Audiovisual systems are becoming more and more complex and new 
possibilities of presenting content are available, including augmented 
reality and immersive environments. In this framework, user requirements 
are not limited anymore to requirements on connectivity, but users 
expect services to be delivered according to their quality demands. 
However, for wireless systems the possible limitations due to the 
characteristics of the transmission channel and of the devices can 
result in perceivable impairments, originated in the different steps of 
the value chain from content production to display techniques, that 
influence the user’s perception of quality.
In recent years, the new concept of quality of experience (QoE) has been 
defined, where the QoE concept differs from quality of service (QoS) in 
that more than on the performance of the network, the focus is on the 
overall experience of the consumer accessing and using the provided 
services. Objective, rather than subjective, QoE evaluation enables user 
centric design of novel multimedia systems, through an optimal use of 
the available resources based on such objective utility index.
The seminar will focus on the need for objective evaluation of video 
quality and quality of experience for an effective design of wireless 
multimedia systems. Quality metrics recently developed by the author 
together with the members of the Wireless Multimedia Networking research 
group in Kingston University will be presented, together with some 
examples of their usage in a cross-layer, QoE-driven system design, such 
as in the recent OPTIMIX and CONCERTO EU projects.

Maria G. Martini is a Reader (Assoc. Prof.) in the Faculty of Science, 
Engineering and Computing in Kingston University, London, where she also 
leads the Wireless Multimedia Networking Research Group.
She received the Laurea in electronic engineering (summa cum laude) from 
the University of Perugia (Italy) in 1998 and the Ph.D. in Electronics 
and Computer Science from the University of Bologna (Italy) in 2002.
She is has led the KU team in a number of national and international 
projects, funded by the European Commission, UK research councils and 
international industries.
An IEEE Senior Member, she is a (guest) editor and reviewer for 
international journals and she has been in the organising and programme 
committee of several international conferences. She has recently served 
as lead guest editor for the IEEE JSAC special issue on QoE-aware 
wireless multimedia systems, for the Int. Journal on Telemedicine and 
Applications, and for the JCNC special issue on Improving QoS and QoE 
for Mobile Communications. She was general chair of the ICST/ACM 
MOBIMEDIA 2009 conference and of EUMOB 2008. She has organised the IEEE 
Workshop on Streaming and Media Communications (ICME 2011) and the First 
International Workshop on Cross-Layer Operation Aided Multimedia 
Streaming (IEEE VTC 2011). She coordinated (2008-2010) the edition of 
the Strategic Applications Agenda (SAA) on mobile health and inclusion 
applications in the eMobility European Technology Platform. She is part 
of international committees and expert groups, including the IEEE 
Multimedia Communications technical committee (key member 2010-2012 for 
QoE and multimedia streaming) and the Net!Works European Technology 
Platform expert group.
Her research interests include wireless multimedia networks, cross-layer 
design, joint source and
channel coding, 2D/3D error resilient video, 2D/3D video quality 
assessment, and medical
applications. She is the author of over 80 international scientific 
articles and book chapters, and the inventor of several patents on 
wireless video.

-- 
Richard G. Clegg,
Dept of Elec. Eng.,
University College London
http://www.richardclegg.org/




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